Carson Valley is an unincorporated community and census-designated place (CDP) in Blair County, Pennsylvania, United States.

[2] The CDP is in western Blair County, in the eastern part of Allegheny Township.

It is named for the valley in which it sits, drained to the east by Spencer Run coming down from the Allegheny Front.

U.S. Route 22, a four-lane freeway, runs south and west of Carson Valley, with the closest access to the east from PA 764.

This Blair County, Pennsylvania state location article is a stub.